Rolling mill



Patented Oct. 10, 1922..

3 SHEETS SHEH INVENTOH J. KENNEDY.

ROLLING MILL.

APPLICATION F'ILED JAN. 26. 92.

Patented Oct. w, 1922.

3 SHEETS-SHEET 2.

J. KENNEDY.

ROLLING MILL.

APPLECATION I'ILED 1Ar-.2s.92.

Patented Oct. W, 11.922.

3 SHEETS Shit-.13

INVENTOR.

Patented Uct. TU, T.,

JULIAN KENNEDY, OF PITTSBURGH, PENNSYLVANIA.

ROIIING MILL.

Application filedJanuary 26, 1921. Serial No. 440,()83.

To all whom -'t may concern:

Be it known that I, JULIAN KENNEDY, a citizen of the United States, resding at Pittsbur h, in the county ofAllegheny and State of Pennsylvania, have invented a new and useful Improvement in Rolling Mills, of which the followings a full, clear, and exact description, reference being had to the accompanying drawings, forming part'of this specification, in which z Figure l is a View partly in end elevation and partly in vertical section of a rolling mill embodying my invention `igure 2 is a longitudinal vertical section of the mill; a

Figure 3 is an end elevation of a portion of the mill;

Figure 4 is a detail view partly in elevation and partly in section of the upper portion of one of the posts or columns; and

F ig. 5 is a plan View of the same.

My inventon has relation to improvements in rolling mills, and is designed to provide a novel housing Construction which will greatly facilitate changng of the mill rolls.

The nature of my invention will be best understood by reference to the accompanying drawings, in which T have shown the preferred embodiment thereof and which will now be described, it being premised, however, that various changes can be made in the details of Construction, arrangement and combination of the various parts, without departing from the spirit and scope of my invention as defined in the appended claims. i

In these drawings, the numeral 2 designates the base portion or portions of a rolling mill housing, and 3 a separate top 1ousing section. The lower housing portion or portions are provided at each of their four corners with a vertical post or column 4, upon which the top housing section 3 is arranged to slide toward and away from the lower or base housing section 2; the top housing section being provided with suitable bushings 5 for this purpose. The lower housing section is formed with open bearings 6, for the lower roll 7 The top housing section is provided with bearings for the upper roll 8, the lower portions 9 of these bearings being removable. They may be Secured in place by any suitable means,

such as the bolts 10 the securing nuts 11 of which can be readily removed to permit the bearing sections 9 to be dropped away from the roll journals 12 designates telescopng guard members, which surround the columns for the purpose of excluding roll scale, dirt, etc. The upper one of these 'tele'scoping guards are carried by the upper housing, while the lower guard members are carried by the lower housing section.

Each of the posts or columns 4 has a spirally threaded upper portion 13, and each of these threaded portions is engaged by a nut 14, which carries a worm wheel 15, rigidly attached thereto. The four nut members 14 are revolubly mounted in suitable seats 16, in the .upper housing section, and are arranged to be actuated in unison by any sutable means, such as the shaft 17, having thereon the two worms 18. Preferably, in order to equalize the thrust, the threads of adj acent posts or columns, together with the threads of the corresponding worm wheels 14 and of the worms 18 are of opposite hand.

The shaft 17 may be driven by any suitable means, such as the reversible electric motor indicated diagrammatically at 19 in Figure 1.

The threads of the posts or columns are so constructed that the nut members 14 may be run entirely ofl from such threads at the upper ends, the four nuts leaving the last threads on each of the four posts or columns at substantially the same time, thus leaving the upper housing section supported upon the top threads through the medium of said nut members. The entire upper housing section, together with the top roll, can then be readily lifted and removed by a suitable crane, said section being provided with eyes or liftng apertures 20, for this purpose. When so lifted, the housing section and top roll may be carried to any desired place and lowered upon a suitable support. The lower bearing sections for the upper roll can then be removed, and said roll dropped away from the housing section. The housing section may then be again lifted and lowered over a new roll and the remo-vable hearing members again placed in position.

housing section is then again lifted and carried back to the mill and lowered into position on the posts or columns. Counterbal- The ance rods 21 are provided for the upper housing section, one ot' these rods extending upwardly through each of the posts or columns and engaging the upper portion of said section to receive the weight thereot the latter is lowered into position. Any suitable or usual counterbalance mechanism (not shown) may be connected to these counterbalance rods.

The operation of the motor 19 may be in part automatically controlled in any suitable manner. ln Figure l, I have illustrated diagrammatically an arrangement of circuits r'or the motor 19, by which this can be done. 22 designates a tappet device, secured to the upper housing section and adapted for contact with any one of the three trip switches 23, 24 and 25; the tri) switch 23 being effective to break the circuit when the top housing section has been lowered to the maximum extent, and the intermediate trip switch 24 being arranged to break the circuit when the top roll is raised to its maximum height ot' adjustment. lVhen it is desired to entirely remove the housing for the purpose of changing the rolls, as above described, the trip switch 24 may be closed by hand, thus allowing the housing section to continue its upward movement until the tappet 22 engages the top trip switch 25, at which time the nut members 14 will be freed from the threads on the posts or columns.

lt, will be understood that the lower housing nay, in general, be of any suitable construction, and that I do not limit myself to the construction which I have illustrated.

The advantages of my invention will be a pparent to'those familiar with the art, since it not only provides mechanism of simple and efficient character for permitting the necessary adjustment of the upper mill roll, but it also provides a very simple and desirable `;way of changingthe rolls With a minimun expenditure of 'time and labor.

I claim:

1. A rolling mill, comprising a lower housing carrying vertical posts or columns, and a separate upper housing slidably mounted on said posts or columns, each of said housings having roll bearings, and a plurality of oounterbalance members having a lifting engagement with said housing interiorly thereot', substantially as described.

2. A rolling mill, comprising a lower housing carrying vertical posts or columns, said posts or columns having threaded upper portions, an upper housing slidably mounted on said posts or columns and having nut members mounted therein and engaging the threads on said posts or columns, said threads extending to points closely adjacent to the upper ends of the columns and the threads on all the columns terminating at correspondng points, and motive means geared to said nut members. each of said housings having roll bearings, substantially as described.

3. A rolling mill, comprising a lower housing carrying vertical posts or columns, and a separate upper housing slidably mounted on said posts or columns, each of said housings having roll bearings, together with counterbalance means for the upper housing eXtending through said posts or columns, substantially as described.

4. A rolling mill, comprising a lower housing having a vertical post or column at each corner portion thereof, said posts or columns having threaded upper portions, an upper housing mounted to slide vertically on said posts or columns and to be removed from the upper ends thercof, counter-balance members for the upper housing extending through the posts or columns, nut members seated in said upper housing and engaging said threaded portions, said nuts being also removable at the upper ends of the columns, and gearing for actuating said nuts, substantially as described.

5. A rolling mill, comprising a lower housing having a vertical post or column at each corner portion thereof, said posts or columns having threaded upper portions, an upper housing mounted to slide vertically on said posts or columns and to be removed from the upper ends thereof, nut members seated in said housings and engaging said threaded portions, said nuts being also removable at the upper ends of the columns and gearing for actuating said nuts, ad acent pairs of the columns and nut members having threads of opposite hand, substantially as described.

6. A rolling mill, comprising a lower housing having a vertical post or column at each eorner portion thereof, said posts or columns having threaded upper portions, an upper housing mounted to slide vertically on said posts or columns and to be removed from the upper ends thereof, nut members seated in said upper housing and engaging said threaded portions, said nuts being also removable at the upper ends of the columns, and gearing for actuating said nuts, together with counterbalance rods engaging the upper housing at the upper interior portion thereof, substantially as described.

7. A rolling mill, comprising a lower housing having a vertical post or column at each corner portion thereof, said posts or columns having threaded upper portions, an upper housing mounted to slide vertically on said posts or columns and to be removed from the upper ends thereof, nut members seated in said upper housing and engaging said threaded portions said nuts being also removable at the upper ends of the columns, and gea'ing for-actuating said nuts, together With counterbalance rods engaging the upper housing, said rods extending upwardly through the posts or columns, substantially as described.

8. A rolling mill, comprising a lower housing having roll bearings and also having a plurality of upwardly projecting posts or columns formed With threads at their upper portions, an upper housing mounted to slide on the posts or columns and extending over the tops of said posts or columns, nut members mounted in the upper housing and engaging the threads of the posts or columns, and having worm wheels attached thereto, an actuating shaft carrying Worms engaging adjacent pairs of Worm wheels, the ad'jacent posts or columns and worm wheels having threads of opposite hand and. counterbalancing rods extending through said posts or columns and engaging the upper housing where it extends over the ends of said posts or columns, suhstantially as described.

9. rolling mill comprising a lower housing carrying vertical posts, said posts having threaded upper portions, a single upper housing slidably mounted upon said posts and having nut members nounted therein and engaging the threads on' said posts, and means 'or rotating said nut mem'- bers to remove said housing from the tops of said posts, substantially as described.

10. A rolling mill coinprising a lower housing carrying vertical posts, said posts having threaded upper portions, a single upper housing slidably mounted upon said posts and having nut members mounted therein and engaging the threads on said posts, roll bearings on said housing, a roll in said bearings, means Whereby said roll may he detached from said housing, means for rotating said nut ,members to remove said housing from the tops ot' said post-s without said roll, and counterbalancing means for said housing, suhstantially as de scribed.

In testimony whereof, I have hereunto set my hand.

JULIAN KENNEDY. 

